If you install cinelerra from atrpms it will be quite incompatible with your other repos and may cause conflicts to your installed packages. This time, we rebuild an older package from freshrpms.net site.

I have found a pretty helpful article for ffmpeg recompile: http://fozzolog.fozzilinymoo.org/tech/2009/11/recompiling-ffmpeg-for-fedora-12-to-add-faac-support.html . However, it looks like the instructions were incomplete.